Latest NDA Aptitude Question SOLUTION: A bag contains balls of two colours, 3 black and 3 white. What is the smallest number of balls which must be drawn from the bag, without looking, so that among these there are two

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(#M40026551) NDA question Mental Ability Keep an EYE

A bag contains balls of two colours, 3 black and 3 white. What is the smallest number of balls which must be
drawn from the bag, without looking, so that among these there are two of the same colour

Asked In NDA MAN (11 years ago)

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ranjan kumar hasda  (1 year ago)

1st Draw:
Either White or Black ball (Let say White)

2nd Draw:
If again White, then 2 is the minimum number of draws to have two balls of same colour. [Local Minima / End of Problem]
and If Black, then we have to go for 3rd Draw. [Problem Continues]

3rd Draw:
Either Black or White ball will ensure that we will have two balls of same colour. [No more problem persist]

Solution:
Minimum number of draws to have two balls of same colour is 2.
Maximum number of draws to ensure a minimum of two balls of same colour is 3.

Verdict: Question is not well written. Thus creating a confusion.

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